diff --git a/product_total_weight_from_packaging/readme/DESCRIPTION.rst b/product_total_weight_from_packaging/readme/DESCRIPTION.rst
index 5e7a5206b69f..e6fd25e75002 100644
--- a/product_total_weight_from_packaging/readme/DESCRIPTION.rst
+++ b/product_total_weight_from_packaging/readme/DESCRIPTION.rst
@@ -4,3 +4,11 @@ taking into account the product packaging's weights.
 It uses the module `stock_packaging_calculator` to get weight from product packagings
 having a weight defined first and fallback on product weight field
 if no weight is defined on any of the packaging.
+
+.. warning::
+
+  This module is lacking the weight uom conversions as it depends on
+  *product_packaging_dimension* that depends on *product_logistics_uom*
+  that allows to set a uom on the weight.
+
+  **The sum in this module is assuming all weights are in kg**.